html, body {
    position: relative;
    height: 100%;
}
body {
    background: #eee;
    font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
    font-size: 14px;
    color:#000;
    margin: 0;
    padding: 0;
}
.swiper-container {
    width: 100%;
    height: 100%;
}
.swiper-slide {
    background-position: center;
    background-size: cover;
}
.swiper-slide #welcome{
    position: absolute;
    bottom: 70px;
    right: 70px;
    border: 1px solid #1afa29;
    border-radius: 8px;
    color: #1afa29;
    font-size: 32px;
    -webkit-animation-duration: 1s;   
    -webkit-animation-delay: 2s;  
    -webkit-animation-iteration-count: 1;    
}

#music #audio-btn{
    position: absolute;
    width: 44px;
    height: 44px; 
    top: 12px;
    right: 12px;
    background-size: 100% 100%;
}
#music .on{
    background: url('../images/music_on.png') no-repeat 0 0;
    -webkit-animation: rotating 1.2s linear infinite;
    animation: rotating 1.2s linear infinite;
}
#music .off{
    background: url('../images/music_off.png') no-repeat 0 0;
}
@-webkit-keyframes rotating {
    from{
        -webkit-transform: rotate(0deg);
        -moz-transform: rotate(0deg);
        -ms-transform: rotate(0deg);
        -o-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    to{
        -webkit-transform: rotate(360deg);
        -moz-transform: rotate(360deg);
        -ms-transform: rotate(360deg);
        -o-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}
@keyframes rotating {
    from{
        -webkit-transform: rotate(0deg);
        -moz-transform: rotate(0deg);
        -ms-transform: rotate(0deg);
        -o-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    to{
        -webkit-transform: rotate(360deg);
        -moz-transform: rotate(360deg);
        -ms-transform: rotate(360deg);
        -o-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}